now there are two tables posts and tags
A post in posts can have more than one tag
tags
sql:
now there are two tables posts and tags
A post in posts can have more than one tag
well, in the end, I found a lot of examples in node mysql's official issues, and found that if you use a single statement directly, many query results return a json or object instead of an array, so the last thing I do is
.
I want to find out how to change all the primaryKey, of a table ...
Xiaobai asks for advice. My following code sent the stuname to the front end, and the front end also received it, but the back jumped to the page mainnav, so how does this stuname pass to mainnav? app.post( login stulogin ,function(req, res){ ...
I used knex, in the background to change that statement to knex version or knex or directly support utf-8 statement query can also select * from tailor order by convert(province using gbk) ...
batch updates of mysql update in nodejs is passed in an array, and the former affects the latter for example, [id,num] [[1jue 3], [2jue 5], [6je 8]] . SET num=? WHERE id=? ...
login Code: $.ajax({ url: " login userlogin", data: { username: $("-sharpusername").val(), userpwd: $("-sharpuserpwd").val() }, ...
query has been encapsulated in promise. If the test is successful, you can get the existing data . but I want to query a row that does not exist (open_id = zzz ) : would like to ask the boss, is there any solution, I would like to thank you...
make a list of articles, and then enter the details according to the id of the article. now I have a problem, that is, when my article list jumps to article details according to id, the article details get id and then look up the corresponding columns a...
I need to do a game background, but I don t know much about the back-end part, so I d like to ask the following people. I created the connection pool with the mysql module, and I see in the document that if you don t call pool.end () to close the con...
bulkCreate (records, [options])-> Promise. < Array. < Instance > > after setting the options.ignoreDuplicates option, instances of records array records will be returned regardless of whether they are created or ignored. How to get only the affected row...
const books = await mysql( books ) .select( books.* , csessioninfo.user_info ) .join( csessioninfo , books.openid , csessioninfo.open_id ) .orderBy( id , desc ) code: ER_CANT_AGG...
< H2 > as shown in figure < H2 > for example, I want to convert the checked data goods_id to goodsId . ...
problem description on the basis of the general query connection.query (querySql,values,function () {}) of the mysql module in NODE.JS, how to abstract the mysql dynamic parameter query (no, one, multiple parameters)? related codes has uncondition...
< hr > how can this method be changed to sequelize syntax? Multiple table associations urgent. makeupUpdateAccountInfo: function (data) { var companyCode = "" if (data && data.companyCode) { companyCode = ...
1. The company project has a functional requirement, which needs to store the number of gold coins in the game, and needs to do the gold coin ranking function. 2. If the total number of gold coins does not exceed 20, you can use the bigint field, but th...
problem description when calling the stored procedure, 19 parameters were passed, but the program mistakenly reported 20 parameters the environmental background of the problems and what methods you have tried related codes Please paste the c...
problem description node version 8.9.2. The connection mysql8.0, shows that the connection was successful but an error was reported as Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider u...
first of all, the system uses the manjaro (linux) system. I installed mySQL, in the project directory, but when I node timetrack_server.js the file, I made the following error: home dema codeSpace studyNode testMySQL timetrack_server.js:49 if ...